startForceAtlas2 doesn't appear to have an effect (no animation)

Just taking baby steps with this library in loading up some information from json and rendering it. I want to ‘auto-layout’ the nodes, which from what I gather from other issues means I need to run a layout procedure. A couple questions:

1. why doesn’t the below work? (renders graph but doesn’t animate moving nodes)
2. is there a CDN for sigma (to include the plugins for reading json)?
3. meta-question: parsing my initial data in python and assigning random x,y currently. Could I not assign any x,y and have sigma attempt a layout upon initialization of the graph?

s = new sigma({
  container: 'graph-container'
});

sigma.parsers.json(
  'test.json',
  s,
  function() {
    s.refresh();
  }
);

s.startForceAtlas2({worker: true, barnesHutOptimize: false});

[Yomguithereal]

Hello @storrgie. Your problem is with JS’s asynchronous behavior here. When you start the layout, your graph hasn’t actually been loaded yet. You should try the following:

s = new sigma({
  container: 'graph-container'
});

sigma.parsers.json(
  'test.json',
  s,
  function() {
    s.refresh();
    s.startForceAtlas2({worker: true, barnesHutOptimize: false});
  }
);

[stale[bot]]

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